How would you define this behavior?

So, I was passing also some info to my program director at work.
She basically runs this organization.
Anyway, there’s this nurse that works here and she’s been a downright bitch to me. I approached my boss by letting her know I was having an issue. I stated that the LPN was treating me like a “wet-behind-the-ears, brat.” The program director, replied, “well, you are.” The nerve!

So, I’m wondering how one would define that? Harassment? Bullying?
Might as well make this social I’m sure some of you Jellies have had similar stories